Machine for backing books



Jan, 6. 1925.

I G. P. WALLNER v MACHINE FOR BACKING BOOKS Filed May 28, 1925 2 Sheets-Sheet 1 Jan, 6. 1925. I 1,521,848 G. P. WALLNER MACHINE FOR BACKING BOOKS Filed May 28 19723 2 Sheets-Sheet 2 Patented Jan. 6, 1925,

UNITED STATES GEORGE P. WALLNER, 0F GABY,'ILLI1\TOIS.

MACHINE FOR BACKING BOOKS.

Application filed May 28, 1923.

T 0 all whom it may concern:

Be it known that I, Gnonen P. VVALLNELR, a citizen of the United States, residing at Cary, in the county of McI-Ienry and State of Illinois, have invented certain new and useful Improvements in Machines for Backing Books, of which the following is a specification.

This invention relates to improvements in machines for rounding the backs of books in the course of their manufacture; and it relates especially to a particular machine which is now and has heretofore been in more or less extensive use for the purpose, involving the general construction and manner of operation set forth in Letters Patent .of the United States No. 372,128, dated .00- tober 25, 1887.

One of the objects of the invention, is the provision of a very simple and efficient attachment or means for incorporation with or in machines of the general construction or type, above mentioned, without any material alteration insuch construction, whereby the operating capacity of the machines will be greatly increased by overcoming the impact strains to which they are subjected in operation and which tend to disorganize the mechanism and impair the durability thereof when operated athigh speed or full capacity.

Another object attained by my improvements is a considerable reduction in the noise produced incident to the operation of the machine, as wellv as providing a more evenly running and, otherwise more satisfactorily operating machine. 7 a

. The above mentioned, as well as other objects and advantages, which will become apparent from the following description and explanation, are accomplished by furnishing a counteracting or equalizing mechanism for reducing to a minimum the impact strains exerted-at the opposite ends of the stroke of the oscillating member in carrying a book, fed to it, to therounding backing block and returning to receive another book to be thus carried. 1

In the accompanying drawing,

Figure 1 is a view in vertical sectional elevation of the machine of the aforesaid patent, showing substantially the same, con struction, or suflicient thereof, for readyum derstanding fi'iom' the description herein- Serial No. 641,902.

Figs. 2 to 4 inclusive, are views in side elevation of the oscillating book carrying member of the machine, showing about the positions the parts of my attachment will occupy in the back and forth movement of said member.

The mechanism for gripping a b-ookto be acted 011, shown as a lower roller a and an upper vertically reciprocating feed-roller 5; that for taking the book from the feed-rollers, shown as an ascillating head 6 carrying a reciprocating guide member 7 co-operating 'with its upper end; and that for rounding the back of the'book shown as a concavefaced rocking head8 actuated by opposing toothed quadrants 9 and 10 and to which the book is carried by the oscillating head 6 to' have the back rounded, are all operated and twined through proper connections with suitable cams on a drive shaft 11, all substantially as set forth in the aforesaid vLetters Patent. 7

The operator feeds the books to be backed, one at a time, on a tab-1e 12 between the rollers 1 and 5, and with its back presented thereto, while the roller 5 is in its raised position. The mechanism is so .timed that the head 6 is at the end of its return stroke withthegripping member 7 in. raised position to receive the book from the feed-rollers, between itand the upper endo-f the oscillating head, whereupon the member 7 descends its connections therewith, to rock thequadrant-carried head 8 and round the back of the book. The mechanism is timed to cause the swinging head 6110 remain at the end of its advanced stroke sufiiciently longto retain the book back in its position relative to the head 8 until the latter has been repeatf edly rocked to adequately perform its work. Thereupon, the head 6 isc'aused to move through its retu'rrff's'troke, wherein the aw 7 is raised to free the tote the operator then removes, while the parts are assuming their initial positionsfor receiving and acting on another book in the manner described.

The advance stroke of the head 6 is limited by straightening the toggle 13, which produces meeting of the shoulders 13 shown on the adjacent ends of its members; and. at the end of its return stroke the oscillating head encounters one end of a rod 16 adjustably and rigidly supported to extend into its path.

The impact of the head 6 against the stop rod 16 at the end of its return stroke, and the jerk by which it is arrested at the end of its advance stroke, by straightening of the toggle 1'3, jars the machine with a de gree of force which soon impairs its operation by disorganizing and wearing its working parts, unless the machine is being worked much slower than its actual capacity would permit. To overcome this defect is one of and the main object of my improvements or attaching mechanism.

As is clearly shown in the drawing, the toggle 13 is actuated through the instrumentality of a cam 17, fixed on the driving shaft 11, and having a cam-race 18, for 00- operation with a roller 19, carried by the forked reciprocating member 20, the prongs of which stride said shaft, and the following named connecting elements uniting the reciprocating member 20 to said toggle. The end of the member 20 opposite the shaft 11, is :adjustably connected by means of a screw 21 threaded therein to a head 22 adjustably mounted in the slot 23 of an arm 24 rigidly secured on a shaft 25 horizontally mounted on the main frame of the machine in advance of the lower portion of the oscillating head. Keyed or fixed to this shaft 25 and extended therefrom to a point rearwardly and below the pivot of the head 6, is another arm 26, to the rear portion of which is pivotally secured the lower end of a connection designated as a whole by the numeral 27,. the upper end of which is pivotallysecured to the overlapping portion of the shoiildors 13 of the above mentionedtoggle. From the foregoing and by reference to Fig. 1 of the drawing it will be understood and seen, that as positioned with respect to one another on the shaft 25, the arms 24 and 26 will act as the members of a bellcrank-lever, and that as the member 20 is reciprocated by the cam 17, the head 6 will be oscillated back and forth.

My improved mechanism or means for overcomingor reducing to a minimum the deleterious jars, rebounds or vibrations and noise, incident to the impact of the oscillating head with the parts above mentioned, at the, ends of its strokes and thereby causing unnecessary wear of and strain on parts of themachine, as well as preventing it running at its 'full capacitypcomprises a toggle menses 28, one of the members of which is clampingly mounted on a horizontally disposed shaft 29, on the main frame in advance of the head 6, and the other member thereof has its rear end pivotally connected to a lug or projection 30 on the middle upper front portion of the oscillating head; an arm 31 fixed on the rock shaft 25 near the arm 26 thereon, but extended from said shaft upwardly and forwardly; links 32 and 33 connecting the members of the toggle 28 at their adjacent ends to the arm 31 at its free or frontend and coil-spring 34 connected at one of its ends to the rear end of the link 33 and at its other end to a foot or projection 35 with which the arm 31 is provided.

From the foregoing, and by reference to the drawings, it will be readily understood and clearly seen that, when the oscillating member or head 6 is in the position illustrated in Figs. 1 and 2 of the drawings, or in that position thereof to receive a book fed to its upper end by the feed-rollers 4 and 5, it being understood that at this time the jaw 7 is in its raised position to receive between its lower surface and the top of the head 6 the book, the elements of my attachment or improvement will occupy about the positions shown in Figs. 1 and 2 and that the said head or oscillating member 6 will be held by reason of the tension of the spring 34 exerted thereon through the links 33, 32 and toggle member 28, in such a way as to'prevent vibrations or quivering movement laterally, thereby stabilizing it in its said position, so that uniformity and evenness in the portions of thebooks to be rounded will be effected, instead of, as heretofore, unevenness and irregularity in such portions. As the head 6 advances towards the rounding block 8, the toggle members 28 of my improvement will be caused to assume about the positions shown inFig 3, when the head 6 shall have reached about the point indicated by the arrow at A in Fig. 1 of the drawings, and when at such point, the tension of the spring 34 of the improvement will be at its maximum, thereby equalizing the force imparted to the head 6 by the tog gle 33of the machine. When the head or member 6 shallhave reached about the point indicated by the arrow at B in Fig. 1, the parts of my improvement or mechanism will. assume about the positions illustrated in Fig. 4 of the drawings, in which it will be seen and understood that the spring 34 is substantially inert or without tension. In the return movement of the head 6 from the rounding block 8, it is obvious that the tension of the spring 34 of the improvement will be exerted in such a way as to counteract the action of the toggle 13 to such an extent as to prevent injurious impacts of the head 6 against the stop rod 16 of the machine,

free

Having thus fully described my invention, What I claim as new and desire to secure by Letters Patent is: p

1. In a machine for backing books, the combination with a bookfeed, of a movable head for working against a book-back, a second movable head operating between said feed and said book-back working head, and a mechanism operatively connected to said last named head and the driving shaft of the machine and operating to cushion and stabilize said head, said mechanism located in front of the last named head.

2. In a machine for backing books, the combination with a book-feed, of a rocking head for working against a book-back, a second oscillating head operating between said feed and said book-back Working head, and a mechanism operatively connected to said last named head and the driving shaft of the machine and operating to cushion and stabilize said head, said mechanism located between the said driving shaft and the surface of the last named head adjacent said shaft.

3. In a machine for backing books, the combination with a book-feed, of a rocking head for working against a book-back, an oscillating head operating between said feed and rocking head, and a power equalizing mechanism operatively connected to said last named head and the driving shaft of the machine and operating to cushion and stabilize said head, the said mechanism comprising a toggle pivotally connected at one of its ends to said oscillating head and pivotally connected near its other end to a support located in front of said head, an arm mounted for rocking movement below said toggle provided with a depending foot and actuated by said driving shaft, a link pivoted on said arm, a spring uniting one end of said link to said foot, and another link connecting the said toggle to the other end of the first named link.

GEORGE P. WALLNER'. 

